(CNN) - Politicians will be in plentiful supply this Memorial Day as the ramp-up to the 2012 presidential election begins in earnest.

Former Alaska Gov. Sarah Palin, who began a nationwide bus tour Sunday, generated plenty of buzz by riding into Washington on the back of a motorcycle. The Republican is believed to be considering a White House bid, but has not announced her intentions.

CNN: Memorial Day brings out presidential hopefuls
Politicians will be in plentiful supply this Memorial Day as the ramp-up to the 2012 presidential election begins in earnest. …Former Alaska Gov. Sarah Palin, who began a nationwide bus tour Sunday, generated plenty of buzz by riding into Washington on the back of a motorcycle. The Republican is believed to be considering a White House bid, but has not announced her intentions.